Finding the Fourth Proportional to 211,135.54, 291,371.76 and 120,489.70
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Solution
The fourth proportional to 211,135.54, 291,371.76 and 120,489.70 is: 166,278.48
Step by Step Solution
- Step 1: Write the proportion equation
211,135.54 : 291,371.76 = 120,489.70 : x - Step 2: Convert to fraction form
211,135.54/291,371.76 = 120,489.70/x - Step 3: Cross multiply
211,135.54x = 291,371.76 × 120,489.70 - Step 4: Simplify right side
211,135.54x = 35,107,295,950.87 - Step 5: Solve for x
x = 35,107,295,950.87/211,135.54 - Step 6: Final answer
x = 166,278.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.